<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">
          <div class="item border-bottom">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default {
  name: 'CityList',
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('./')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState(['city'])
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/variables.styl'
    .border-topbottom
      &:before
        border-color #ccc
      &:after
        border-color #ccc
    .border-bottom
      &:before
        border-color #ccc
    .list
      overflow hidden
      position absolute
      top 79px
      right 0
      bottom 0
      left 0
      .title
        line-height 27px
        background #eee
        padding-left 10px
        color #666
        font-size 13px
      .button-list
        overflow hidden
        padding 5px 30px 5px 5px
        .button-wrapper
          float left
          width 33.33%
          .button
            text-align center
            padding 5px 0
            margin 5px
            border 1px black solid
            border-radius 3px
      .item-list
        .item
          line-height 27px
          padding-left 10px
</style>
